Trying to replace UUID in fstab using sed

Asked Apr 08 '19 at 09:16

Active Apr 08 '19 at 09:16

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I am trying to replace the UUID in /etc/fstab using sed and I want to assume I don't know the current UUID.

Here's what I have tried so far:

 export UUID=$(blkid /dev/vda1 -sUUID -ovalue)

echo $UUID
f13d84b4-c756-4d89-9d5e-6b534397aa14

sudo sed -i -e "s/UUID=[a-f0-9-]+/UUID=$UUID/g" /etc/fstab

I think that should work, however the fstab doesn't seem to change at all. Would anyone be able to help or see where I am going wrong?

asked Apr 08 '19 at 09:16

Grant Morley

1

Use `"s/UUID=[a-f0-9-]*/UUID=$UUID/g"` – Wiktor Stribiżew Apr 08 '19 at 09:17
I've managd to fix this now. I was over complicating the sed command. I just needed to run: `sed -i -e "s/UUID=[^ ]*/UUID=$UUID/" ` – Grant Morley Apr 08 '19 at 09:29

0 Answers0